Date: Sun, 10 Feb 2013 17:43:16 -0800 From: Marc Fournier <scrappy@hub.org> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: freebsd-stable@freebsd.org, John Baldwin <jhb@freebsd.org> Subject: Re: 9-STABLE -> NFS -> NetAPP: Message-ID: <61DAA500-EB20-4861-AA7F-402FF1047B81@hub.org> In-Reply-To: <0EB27C56-93A1-4FAE-9FB5-CAD960098609@hub.org> References: <1946688889.2870936.1360542666536.JavaMail.root@erie.cs.uoguelph.ca> <0EB27C56-93A1-4FAE-9FB5-CAD960098609@hub.org>
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Just reset server, so any further details will have to be 'next time' … but, just did a csup and am rebuilding … the following three files were modified since last build: grep nfs /tmp/output Edit src/sys/fs/nfs/nfs_commonsubs.c Edit src/sys/fs/nfsclient/nfs_clrpcops.c Edit src/sys/fs/nfsserver/nfs_nfsdserv.c On 2013-02-10, at 4:56 PM, Marc Fournier <scrappy@hub.org> wrote: > > On 2013-02-10, at 4:31 PM, Rick Macklem <rmacklem@uoguelph.ca> wrote: > >> Marc Fournier wrote: >>> Hi John … >>> >>> Does this help? >>> >>> root@io:~ # ps auxl | grep du >>> root 1054 0.0 0.1 16176 6600 ?? D 3:15AM 0:05.38 du -skx /vm/2799 0 >>> 81426 0 20 0 newnfs >>> root 12353 0.0 0.1 16176 5104 ?? D Sat03AM 0:05.41 du -skx /vm/2799 0 >>> 91597 0 20 0 newnfs >>> root 64529 0.0 0.1 16176 5164 ?? D Fri03AM 0:05.40 du -skx /vm/2799 0 >>> 43227 0 20 0 newnfs >>> root 12855 0.0 0.0 16308 1988 0 S+ 5:26AM 0:00.00 grep du 0 12847 0 20 >>> 0 piperd >> It is probably too late, but all the lines (without the | grep du) would be >> more useful. I also include the "H" flag, so it lists threads as well as >> processes. The above just says the "du" command is waiting for a vnode lock. >> The interesting process/thread is the one that is holding a vnode lock >> while waiting for something else. > > As requested, 'ps auxlH' attached … > > > <ps.out.bz2> > >> >> Are you still getting the: >> nfs_getpages: error 13 >> vm_fault: pager read error, pid 11355 (https) > > Fairly quiet: > > <Screen Shot 2013-02-10 at 4.43.55 PM.png> > > And that is it since last reboot ~20 days ago … > >> >> messages logged? >> >> With John's recent patch, the error# would no longer be 13 if it was >> caused by the "intr" flag resulting in a Read RPC terminating with EINTR. >> If you are still getting the above with "error 13", it suggests that >> the server is replying EACCES for the Read RPC. >> I suggested before that you check to make sure that the executable had >> read access for everyone one the file server. Since I didn't hear back, >> I'll assume this is the case. > > Don't understand this question … I have 34 VPSs running off of this server right now … that 'du process' runs against each of those VPSs every night, and this problem started happening on Friday night's run … ~18 days into uptime … so the same process has run repeatedly, with no issues, 18 times before it hung on Friday … also, the hang, once 'triggered', only seems to recur against the same directory … the same directory doesn't necessarily trigger it, but once it starts, it appears to do it for the same directory … I'm not sure if I've ever seem it happening to two different directories at the same time … > > Also, please note that the du command is run from the physical server, as root … > >> rick >> ps: If it is still up and hasn't been rebooted, you could: >> sysctl debug.kdb.break_to_debugger=1 >> - then type <ctrl><alt><esc> at the console and do the following >> from the debugger >> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-deadlocks.html >> How well this work depends on what options your kernel was built with. > > My remote console on that one doesn't work very well … I can view, but I can't type … > >
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